writeback: trace event balance_dirty_pages

[pandora-kernel.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index e3c2d8b..45d36f7 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1103,12 +1103,34 @@ static void balance_dirty_pages(struct address_space *mapping,
                                        pos_ratio >> RATELIMIT_CALC_SHIFT;
                pause = (HZ * pages_dirtied) / (task_ratelimit | 1);
                if (unlikely(pause <= 0)) {
+                       trace_balance_dirty_pages(bdi,
+                                                 dirty_thresh,
+                                                 background_thresh,
+                                                 nr_dirty,
+                                                 bdi_thresh,
+                                                 bdi_dirty,
+                                                 dirty_ratelimit,
+                                                 task_ratelimit,
+                                                 pages_dirtied,
+                                                 pause,
+                                                 start_time);
                        pause = 1; /* avoid resetting nr_dirtied_pause below */
                        break;
                }
                pause = min(pause, max_pause);
 
 pause:
+               trace_balance_dirty_pages(bdi,
+                                         dirty_thresh,
+                                         background_thresh,
+                                         nr_dirty,
+                                         bdi_thresh,
+                                         bdi_dirty,
+                                         dirty_ratelimit,
+                                         task_ratelimit,
+                                         pages_dirtied,
+                                         pause,
+                                         start_time);
                __set_current_state(TASK_UNINTERRUPTIBLE);
                io_schedule_timeout(pause);